Makes › Daimler-Motoren-Gesellschaft › Mercedes › Mercedes 150 hp "Semmering"/"Brookland" racing car · Factory competition · 1908–1910
Daimler-Motoren-Gesellschaft
Mercedes 150 hp "Semmering"/"Brookland" racing car
15.4-litre special for non-GP events (Brooklands, Semmering hill climb 1908)
Still being researched: identification guide, full specifications. Everything shown is checked against the cited sources. Know more? Send us a source.
Contents
01Overview
At a glance
- Built
- Not yet verified
- Years
- 1908–1910
- Engine
- 15,400 cc / 15.4 LFactory: 15.4 L
- Power
- 112 kW / 152 PSFactory: 150 hp · converted
- Top speed
- 173.1 km/hFactory: 173.1 km/h
- Body
- Not yet verified
- Designer
- Paul Daimler
- In this archive
- Not yet verified
- Surviving
- Not yet verified
Sources and any conflicting figures are in the sections below.
Why it matters
A special-purpose derivative of the 1908 Grand Prix car with a very large 15.4-litre engine, built for races without displacement limits such as Brooklands and the Semmering hill climb. In 1910 a car of this type reached 173.1 km/h over the flying kilometre, the highest speed reported for the type.
How rare is it?
Six separate kinds of rarity – never combined into one number.
Each kind of rarity is rated separately and never combined.
02Production & history
Production
Every figure says what it counts.
No production figures recorded yet.
History
After the Dieppe Grand Prix Paul Daimler had an engine built with 175 mm bore and 160 mm stroke for races outside the Grand Prix regulations, in a Grand Prix chassis. The "Brookland model" also ran at the Semmering hill climb on 20 September 1908, where Otto Salzer won the open class at 81.2 km/h and Willy Pöge was second.
In 1909 the two cars received a 17.3-litre engine with 180 mm stroke, and Salzer won the Semmering again at 84.3 km/h. In 1910 aluminium pistons were reportedly fitted, and Camille Jenatzy reached 173.1 km/h at Ostend on 16 July 1910.
Variants
How each version differs from the standard Mercedes 150 hp "Semmering"/"Brookland" racing car.
No variants documented yet. Have a source? Contribute it.
03Specifications
Technical specifications
Engine
| Engine family | Not yet verified |
|---|---|
| Engine code | Not yet verified |
| Layout | Not yet verified |
| Cylinders | 41 |
| Displacement | 15,400 cc / 15.4 LFactory: 15.4 L1 |
| Bore | 175 mmFactory: 175 mm1 |
| Stroke | 160 mmFactory: 160 mm11909 version had 180 mm stroke and 17.3 L. |
| Compression ratio | Not yet verified |
| Fuel system | Not yet verified |
| Power | 112 kW / 152 PSFactory: 150 hp · converted1Rating: manufacturer110 kW. The archive says some sources claim 180 hp/132 kW in 1910 but that is unconfirmed. |
| Power at | Not yet verified |
| Torque | Not yet verified |
Transmission & drivetrain
| Gearbox | Not yet verified |
|---|---|
| Gears | Not yet verified |
| Driven wheels | Not yet verified |
Chassis, body & dimensions
| Chassis | Not yet verified |
|---|---|
| Front suspension | Not yet verified |
| Rear suspension | Not yet verified |
| Brakes | Not yet verified |
| Steering | Not yet verified |
| Body construction | Not yet verified |
| Wheelbase | Not yet verified |
| Length | Not yet verified |
| Width | Not yet verified |
| Height | Not yet verified |
| Front track | Not yet verified |
| Rear track | Not yet verified |
| Kerb weight | Not yet verified |
| Dry weight | Not yet verified |
Performance
| Maximum speed | 173.1 km/hFactory: 173.1 km/h1Jenatzy, Ostend, 16 July 1910, record attempt. |
|---|---|
| 0–100 km/h | Not yet verified |
| Fuel tank | Not yet verified |
“Not yet verified” means no source has been checked for that value yet. Nothing is estimated to fill a gap.
04Colours & options
Factory colours & interiors
Original paint and trim, with the number of cars in each where a source gives it.
Not yet documented. Have a source? Contribute it.
Factory options & codes
Codes are shown exactly as written by the manufacturer.
Not yet documented. Have a source? Contribute it.
05Individual cars
Chassis register
Every documented car, with its colours, history and where it is now. Open a row for the full record. Known chassis are not automatically authenticated originals.
Not yet documented. Have a source? Contribute it.
Competition history
Every race result of the individual cars, in date order. Click a chassis number to open its full record in the register.
Not yet documented. Have a source? Contribute it.
Auction & sale history
Documented public sales of the individual cars. Click a chassis number to open its full record in the register.
Not yet documented. Have a source? Contribute it.
See one in person
Museums where an example of this car can be seen.
No example is documented on public display yet. Have a source? Contribute it.
06Reference
Identification guide
How to tell an original from a replica or later conversion.
Not yet documented. Have a source? Contribute it.
Sources
Each number links to the exact facts it supports.
-
1
Mercedes 150 hp "Semmering" racing car, 1908 Level A Mercedes-Benz Group AG, Mercedes-Benz Public Archive (Classic M@RS)
- four connecting rods
- displacement of 15.4 litres
- bore of 175 mm and a stroke of 160 mm
- produced 150 hp/110 kW
- 173.1 km/h over the kilometre with a flying start
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